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Dermoscopy

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https://www.readbyqxmd.com/read/27914108/diagnostic-usefulness-of-dermoscopy-in-differentiating-lichen-aureus-from-nummular-eczema
#1
Kee Suck Suh, Jong Bin Park, Myeong Hyeon Yang, Soo Young Choi, Hyun Hwangbo, Min Soo Jang
Lichen aureus (LA) is a variant of pigmented purpuric dermatosis that is characterized clinically by rust macules, papules or plaques, mainly on the legs. In some cases, LA can be difficult to be distinguished from nummular eczema (NE) with the naked eye. Dermoscopy can be applied to skin lesions, revealing additional features that can be highly valuable for correct diagnosis. This study was conducted to investigate characteristic dermoscopic findings of LA and to identify distinctive features that can differentiate it from NE...
December 3, 2016: Journal of Dermatology
https://www.readbyqxmd.com/read/27913337/melanoma-classification-on-dermoscopy-images-using-a-neural-network-ensemble-model
#2
Feng-Ying Xie, Haidi Fan, Li Yang, Zhi-Guo Jiang, Ru-Song Meng, Alan Bovik
We develop a novel method for classifying melanocytic tumors as benign or malignant by the analysis of digital dermoscopy images. The algorithm follows three steps: first, lesions are extracted using a self-generating neural network (SGNN); second, features descriptive of tumor color, texture and border are extracted; and third, lesion objects are classified using a classifier based on a neural network ensemble model. In clinical situations, lesions occur that are too large to be entirely contained within the dermoscopy image...
December 1, 2016: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/27904180/evaluation-of-clinical-significance-of-dermoscopy-in-alopecia-areata
#3
Akhila Sai Guttikonda, Chintaginjala Aruna, D V S B Ramamurthy, K Sridevi, Senthil Kumar L Alagappan
BACKGROUND: Alopecia areata (AA) is a common, chronic inflammatory disease characterized by nonscarring hair loss on the scalp or any hair-bearing area of the body. Recently, dermoscopy, a noninvasive diagnostic procedure, has been employed for the diagnosis of AA. AIM: To evaluate various dermoscopic patterns in AA and correlate these patterns with the disease activity and severity. MATERIALS AND METHODS: Dermoscopy was performed on AA patients using DL1 dermoscope (magnification ×10 was used)...
November 2016: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/27904179/a-clinicopathological-and-dermoscopic-correlation-of-seborrheic-keratosis
#4
Geethu Francis Alapatt, D Sukumar, M Ramesh Bhat
BACKGROUND: Seborrheic keratosis (SK) is the most common benign epidermal tumor of the skin. Even though SK has been well characterized clinically, dermoscopically, and histopathologically, data regarding clinical dermoscopic and histopathological correlation of different types of SK are inadequate. AIM: We carried out this study to establish any correlation between the clinical, dermoscopic, and histopathological appearance of SK and its variants. METHODS: This was a descriptive study...
November 2016: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/27892649/thresholding-methods-for-lesion-segmentation-of-basal-cell-carcinoma-in-dermoscopy-images
#5
R Kaur, R LeAnder, N K Mishra, J R Hagerty, R Kasmi, R J Stanley, M E Celebi, W V Stoecker
PURPOSE: Algorithms employed for pigmented lesion segmentation perform poorly on dermoscopy images of basal cell carcinoma (BCC), the most common skin cancer. The main objective was to develop better methods for BCC segmentation. METHODS: Fifteen thresholding methods were implemented for BCC lesion segmentation. We propose two error metrics that better measure the type II error: Relative XOR Error and Lesion Capture Ratio. RESULTS: On training/test sets of 305 and 34 BCC images, respectively, five new techniques outperform two state-of-the-art methods used in segmentation of melanomas, based on the new error metrics...
November 28, 2016: Skin Research and Technology
https://www.readbyqxmd.com/read/27878858/non-invasive-tools-for-the-diagnosis-of-cutaneous-melanoma
#6
REVIEW
C Fink, H A Haenssle
BACKGROUND: While the excisional biopsy and histological examination of suspicious lesions remains the current gold standard for diagnosing cutaneous melanoma (CM), there is a demand for more objective and non-invasive examination methods that may support clinicians in their decision when to biopsy or not. METHODS: This review is based on publications and guidelines retrieved by a selective search in PubMed and MEDLINE and focused on non-invasive diagnostic strategies for detecting melanoma...
November 22, 2016: Skin Research and Technology
https://www.readbyqxmd.com/read/27867748/pigmented-bowen-s-disease-presenting-with-a-starburst-pattern
#7
Vincenzo Maione, Enzo Errichetti, Sara Laurent Roussel, Celeste Lebbé
Pigmented Bowen's disease (pBD) is an uncommon in situ squamous cell carcinoma of the skin usually presenting as a dark scaly plaque involving chronically exposed sites, which is not uncommonly mistaken for other similar pigmented lesions, such as melanoma, pigmented basal cell carcinoma or seborrheic keratosis [1,2]. Dermoscopy has been proven to improve its diagnosis by showing several findings, i.e., gray/brownish dots in linear arrangement, scales, coiled vessels, focal/multifocal amorphous hypopigmentation and bluish structureless areas [1,2]...
October 2016: Dermatology Practical & Conceptual
https://www.readbyqxmd.com/read/27867746/atypical-case-of-lichen-planus-recognized-by-dermoscopy
#8
Chrysoula Papageorgiou, Zoe Apalla, Elizabeth Lazaridou, Elena Sotiriou, Efstratios Vakirlis, Demetrios Ioannides, Aimilios Lallas
Lichen planus (LP) is an inflammatory disease that affects the skin-mainly the extremities and the trunk-the mucous membranes, the genitalia, the nails and the scalp. The diagnosis of LP is usually established clinically based on the typical morphology and distribution of the lesions in conjunction with the associated itch. We report a patient with LP manifesting highly psoriasiform lesions, that could only be correctly assessed after the application of dermoscopy, which revealed LP-specific findings.
October 2016: Dermatology Practical & Conceptual
https://www.readbyqxmd.com/read/27867742/dermoscopic-appearance-of-an-amelanotic-mucosal-melanoma
#9
Andreas Blum, Ulrike Beck-Zoul, Laura Held, Sylvie Haase
BACKGROUND: Hypomelanotic or amelanotic melanomas are challenging to identify, especially at mucosal sites. The dermoscopic clues to the diagnosis of mucosal melanomas have been reported to be structureless zones with the presence of blue, gray, or white colors. CASE: A female in her seventies noted a new lesion on the inside of her right labia that first appeared two months prior. Her past medical history was significant for rheumatoid arthritis requiring ongoing treatment with methotrexate for 20 years and adalimumab for 10 years...
October 2016: Dermatology Practical & Conceptual
https://www.readbyqxmd.com/read/27867739/dermoscopic-hemorrhagic-dots-an-early-predictor-of-response-of-psoriasis-to-biologic-agents
#10
Aimilios Lallas, Giuseppe Argenziano, Iris Zalaudek, Zoe Apalla, Marco Ardigo, Patricia Chellini, Natalia Cordeiro, Mariana Guimaraes, Athanassios Kyrgidis, Elizabeth Lazaridou, Caterina Longo, Elvira Moscarella, Ilias Papadimitriou, Giovanni Pellacani, Elena Sotiriou, Efstratios Vakirlis, Dimitrios Ioannides
BACKGROUND: Biologic agents are routinely used in the treatment of severe psoriasis. The evaluation of treatment response is mainly based on the physician's global clinical assessment. OBJECTIVE: To investigate whether dermoscopy might enhance the assessment of response of psoriasis to treatment with biologic agents. METHODS: Patients with severe psoriasis scheduled to receive a biologic agent were enrolled in the study. A target lesion from each patient was clinically and dermoscopically documented at baseline and after one, two and six months...
October 2016: Dermatology Practical & Conceptual
https://www.readbyqxmd.com/read/27867738/evaluation-of-electrical-impedance-spectroscopy-as-an-adjunct-to-dermoscopy-in-short-term-monitoring-of-atypical-melanocytic-lesions
#11
Hannah Ceder, Alexandra Sjöholm Hylén, Ann-Marie Wennberg Larkö, John Paoli
BACKGROUND: Early detection of melanoma is vital for treatment outcome and survival. Short-term sequential digital dermoscopic monitoring (ST-SDDM) involves the capture and assessment of dermoscopic images of one or more atypical melanocytic lesions (AMLs), at baseline and after four months, in order to detect early morphologic changes. Electrical impedance spectroscopy (EIS) is a diagnostic tool with high sensitivity for the detection of malignant melanocytic lesions. OBJECTIVES: The aim of this study was to assess whether EIS, in addition to ST-SDDM, could improve the selection of AMLs requiring surgery...
October 2016: Dermatology Practical & Conceptual
https://www.readbyqxmd.com/read/27860083/dermoscopic-monitoring-of-efficacy-of-ingenol-mebutate-in-the-treatment-of-pigmented-and-non-pigmented-basal-cell-carcinomas
#12
Laura Diluvio, Mauro Bavetta, Monia Di Prete, Augusto Orlandi, Luca Bianchi, Elena Campione
Basal cell carcinoma is the most common non-melanoma skin cancer, and its incidence continues to raise. Although surgery can be considered the mainstay of therapy, new current pharmacological options are available and focus on tumor eradication, maximizing cosmetic results, and functional capacity. Several studies have recently reported on safety and efficacy of topical ingenol mebutate gel, a derivative of the plant Euphorbia Peplus, used to treat actinic keratosis and superficial basal cell carcinoma. In our knowledge, we report for the first time the dermoscopic evaluation of outcome and monitoring of superficial pigmented and non-pigmented basal cell carcinomas in four patients treated by this novel non-ablative agent...
November 12, 2016: Dermatologic Therapy
https://www.readbyqxmd.com/read/27843930/linear-lichen-planopilaris-of-the-face-case-report-and-review
#13
Daniel Asz-Sigall, Ana Cecilia González-de-Cossio-Hernández, Erika Rodríguez-Lobato, María Fernanda Ortega-Springall, María Elisa Vega-Memije, Roberto Arenas Guzmán
We describe the case of a 45-year-old man who presented with a 5-month history of unilateral pruritic linear erythematous papules and atrophy on the chin and mandibular area. Dermoscopy showed areas of cicatricial alopecia with absence of follicular openings, perifollicular erythema and pigment. Lichen planopilaris of the face is a rare variant with only 13 cases reported in the literature.
September 2016: Skin Appendage Disorders
https://www.readbyqxmd.com/read/27830262/separating-melanin-from-hemodynamics-in-nevi-using-multimode-hyperspectral-dermoscopy-and-spatial-frequency-domain-spectroscopy
#14
Fartash Vasefi, Nicholas MacKinnon, Rolf Saager, Kristen M Kelly, Tyler Maly, Nicholas Booth, Anthony J Durkin, Daniel L Farkas
No abstract text is available yet for this article.
November 1, 2016: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/27828645/agminated-blue-nevus-case-report
#15
Alice Paixão Lisboa, Keline Jácome Silvestre, Renata Leite Pedreira, Natália Ribeiro de Magalhães Alves, Daniel Lago Obadia, Luna Azulay-Abulafia
Blue nevi are benign melanocytic lesions located in the deeper reticular dermis, consequence of failure of melanocytic migration into the dermal-epidermal junction from the neural crest. Lesions are usually asymptomatic and solitary, but may present in a multiple or agminated (grouped) pattern. The agminated subtype is formed when bluish-pigmented lesions cluster together in a well-defined area. Lesions can be flat or raised. We report the case of a patient who presented multiple bluish macules (1-3 mm in diameter) grouped on the left upper back...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/27803916/lesion-presenting-with-a-blue-amber-pattern
#16
Calogero Pagliarello, Francesca Peccerillo, Alfredo Zucchi, Rocco Giuseppe Tortorella, Roberto Ricci, Ignazio Stanganelli, Claudio Feliciani, Sergio Di Nuzzo
Atypical fibroxanthoma (AFX) is a spindle cell neoplasm with low metastatic potential but high tendency to recur after surgery. Because of the rarity of this lesion and its aspecific clinical features, AFX could be easily misdiagnosed and undertreated by many clinicians who encounter them. Dermoscopy represents a valuable tool for easily assessing skin lesions, even though histological examination is required for final diagnosis. We report a case of a cheek lesion with dermoscopic "blue amber pattern", easily recognisable and not observed in others skin tumours, which could represent an additional feature useful in differentiating this tumour from other skin neoplasms...
October 16, 2016: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/27793452/dermoscopic-patterns-of-fungal-melanonychia-a-comparative-study-with-other-causes-of-melanonychia
#17
Jungyoon Ohn, Yun Seon Choe, Jin Park, Je-Ho Mun
BACKGROUND: Diagnosing fungal melanonychia (FM) is often difficult because it mimics melanonychia caused by other factors. Dermoscopy is helpful in the setting of nail pigmentation. However, the diagnostic characteristics of FM on dermoscopy are not fully elucidated. OBJECTIVE: We sought to determine the dermoscopic characteristics of FM. METHODS: We evaluated the dermoscopic patterns of FM diagnosed at 2 university hospitals from January 2010 to February 2016...
October 25, 2016: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/27791311/platelets-rich-plasma-versus-minoxidil-5-in-treatment-of-alopecia-areata-a-trichoscopic-evaluation
#18
Moustafa A El Taieb, Hassan Ibrahim, Essam A Nada, Mai Seif Al-Din
Alopecia areata is a common cause of nonscarring alopecia that occurs in a patchy, confluent, or diffuse pattern. Dermoscopy is a noninvasive technique for the clinical diagnosis of many skin diseases. Topical minoxidil solution 5% and platelet rich plasma are important modalities used in treatment of alopecia areata. We aimed to evaluate the efficacy of PRP versus topical minoxidil 5% in the treatment of AA by clinical evaluation and trichoscopic examination. Ninety patients were allocated into three groups; the first was treated with topical minoxidil 5% solution, the second with platelets rich plasma injections, and the third with placebo...
October 28, 2016: Dermatologic Therapy
https://www.readbyqxmd.com/read/27790766/association-between-dermoscopic-and-reflectance-confocal-microscopy-features-of-cutaneous-melanoma-with-braf-mutational-status
#19
C Bombonato, S Ribero, F C Pozzobon, J A Puig-Butille, C Badenas, C Carrera, J Malvehy, E Moscarella, A Lallas, S Piana, S Puig, G Argenziano, C Longo
BACKGROUND: Melanomas harbouring common genetic mutations might share certain morphological features detectable with dermoscopy and reflectance confocal microscopy. BRAF mutational status is crucial for the management of metastatic melanoma. OBJECTIVES: To correlate the dermoscopic characteristics of primary cutaneous melanomas with BRAF mutational status. Furthermore, a subset of tumours has also been analysed for the presence of possible confocal features that might be linked with BRAF status...
October 28, 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/27790747/two-cases-of-seborrheic-keratosis-with-basal-clear-cells
#20
Takashi Anan, Takaya Fukumoto, Tetsunori Kimura
Seborrheic keratosis with basal clear cells (SKBCC) is an extremely rare histopathological variant of seborrheic keratosis that has histological similarities to melanoma in situ. We herein report two cases of SKBCC and provide the first description of the dermoscopic features of this condition, in addition to the histopathological findings. Both of the two lesions showed typical histological architectures of seborrheic keratosis with rows or focal clusters of monomorphic clear cells with abundant pale cytoplasm and small round nucleus in the basal layer...
October 28, 2016: Journal of Dermatology
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